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What is manifest file?

 
Suvojit Chakraborty
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Hi,
I have learned about jar's. I know the basic definition of the manifest file.I know that it gets created automatically and that it stores information like version number etc.
But I want to know following :
1.Is it possible to create manifest file manually, overwriting the default one created automatically?
2.What other information does the manifest file stores?
3.Will it be right to say that it is a metadata of the jar file.
4.What is the exact use of the Manifest file?

Thank you to clear my doubts.

BR
Suvojit
 
Ulf Dittmer
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Start here: http://java.sun.com/docs/books/tutorial/deployment/jar/index.html (and bookmark the Java Tutorial, it will come in handy many times)
 
Rob Spoor
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Please read http://java.sun.com/docs/books/tutorial/deployment/jar/build.html for question 1 and http://java.sun.com/docs/books/tutorial/deployment/jar/manifestindex.html for the rest of your questions.
 
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